Tube Dreams

Cary CD 306 SACD Professional Version

Posted on September 7th, 2007 by Simon.
Categories: CD Players, Solid State, Cary.

Following the tremendous success of the 306 line of CD players, Cary Audio Design’s new CD 306 SACD Professional Version includes the latest in SACD, HDCD and CD playback technology. It features a new servo board design with internal components tested to 105° C. The PMD-200 filter has now been replaced with a high quality Burr Brown filter chipset. HDCD decoding is accomplished with the absolute latest software available. Larger, multiple power transformers along with higher current regulators add up to stronger, higher current regulated power supplies. This version continues on with 8 Burr Brown 1792u DAC chips running in a true balanced parallel, extremely low jitter digital to analog converter.

MSRP: $8,000

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Cary SLP 05 Balanced Vacuum Tube Preamplifier

Posted on September 7th, 2007 by Simon.
Categories: Preamplifiers, Modern Tube, Cary.

The Cary SLP 05 is a full featured, top of the line preamplifier with 2 balanced and 3 RCA stereo inputs, CINEMA BYPASS, tape monitor loop, vacuum tube preamplifier featuring (8) 6SN7 vacuum tubes. Vacuum tube head phone power amplifier section built in. Matching external heavy duty power supply with 5AR4 vacuum tube rectification includes front panel voltage and bias meters for the power supply. Standard with remote volume control. Jaguar Anthracite Black clear coat steel chassis and silver anodized aluminum front panel are standard. ZERO feedback design.

MSRP: $8000

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Cary CAD 805 Anniversary Edition

Posted on September 7th, 2007 by Simon.
Categories: Amplifiers, Modern Tube, Cary.

The Cary CAD 805 Anniversary Edition offers 50 watts per channel, Pure Class A Single Ended Triode Mono Blocks with dual 6SN7 input stage, 300B driver stage tube, includes both 845 and 211 output tubes. User selector switch for output tube. Jaguar Anthracite black chassis and top plate with clear coat finish, anodized aluminum front panel. ZERO feedback design.

MSRP: $12,000 / pair

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Cary CAD 211 Anniversary Edition

Posted on September 7th, 2007 by Simon.
Categories: Amplifiers, Modern Tube, Cary.

The Cary CAD 211 Anniversary Edition provides 110 watts per channel in Class A/B, 70 watts per channel in Class A, all Triode tube Mono Blocks with 6CA7 current source, 6SL7 input tube, 300B driver tubes and 845 output tubes. Speaker terminals for 4, 8 or 16 ohm speakers. ZERO feedback design.

MSRP: $16,500 / pair

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Dynaco Stereo 70 (ST-70)

Posted on April 15th, 2007 by Simon.
Categories: Blog, Amplifiers, Vintage Tube, Dynaco.

The Dynaco Stereo 70 is ‘’the'’ classic Dynaco stereo amplifier. The tube complement is four EL34s, two 7199s and a GZ34 rectifier tube. The early models are prized for their very high quality American-made output transformers with cloth leads. These are the only models that Tube Dreams restores. If you’re interested, you’ll find the specifications below.

Currently available ST-70s

There are currently no ST-70s available. However, we would be glad to obtain and restore an ST-70 for you. Call Simon at 512-736-6601 for more information.

Tube Dreams restorations

There are several possible levels of restoration that can be done to make the Stereo 70 sing, along with several optional improvements. These prices include the amp itself. If you have an amp you would like restored, please call to discuss. Typically a basic restoration costs about $200 plus tubes. The audiophile restoration costs another $100 or more depending on precisely what is done.

Basic restoration

The basic restoration replaces the bare minimum of parts to ensure that the power supply is stable and that the original sound quality is restored. The multi-section can capacitor (the silver cylinder) is replaced with a new American-made replacement, the selenium rectifier is replaced with a modern diode, the bias capacitors are replaced with new Sprague Atoms, and the 1W resistors in the power supply are replaced with modern 3W metal film resistors for a quieter power supply.

To restore the sound quality, the six coupling capacitors on the circuit board are replaced with new Solen Fast Capacitors, a superior high purity metallized polypropylene film capacitor.

Optionally, the two-conductor line cord is replaced with a modern three-conductor cord, and the four-screw speaker terminals are replaced with modern binding posts wired for your speaker’s impedance. Another optional modification is to use a higher capacitance multi-section can which increases the bass response.

The restored Stereo 70 is then retubed with new SED (formerly Svetlana) EL34 tubes, Sovtek or JAN Philips 7199 tubes, and a JJ (formerly Tesla) or vintage Mullard GZ34 rectifier. The amp is then biased, broken in, and then rebiased for optimal sound and tube life.

Audiophile restoration

The audiophile restoration builds on the basic restoration by also replacing the whole circuit board with a new board stuffed with modern components. The resistors are primarily Vishay/Dale metal film resistors, one of the most respected resistors in the audio industry. Some of the plate resistors are increased from 1 watt to 3 watts. Higher power capacity resistors will run cooler—and less heat means less noise. Metal film resistors are quieter than vintage carbon composite resistors, so the resulting sound is much cleaner with more detail.

Full restoration

For the full restoration, the chassis is completely stripped and rechromed. The original transformers are remounted and the amplifier is completely rebuilt using new tube sockets and all new components. This includes all the upgrades described in the basic restoration and audiophile restoration sections.

Audiophile boards and rebuild kits

We also sell replacement boards and rebuild kits if you’d like to do-it-yourself.

Specifications

*Power Output: 35 watts continuous, 80 watts peak each channel.
*Frequency Response: ±.5 dB from 10 cps to 40 kc.
*Power Response: 20 cps to 20 kc within 1 dB of 35 watts at less than 1% distortion.
*Intermodulation Distortion: Less than 1% at 35 watts (normally about .5%). Less than .05% at 1 watt.
*Hum and Noise: Inaudible; better than 90 dB below rated power.
*Sensitivity: 1.3 volts rms input for 35 watts out.
*Output Impedances: 4, 8, and 16 ohms each channel.
*Damping Factor: 15.
*Minimum Channel Separation: 55 dB
*Power Consumption: 190 watts 50/60 cps
*Preamp Provision: Two power takeoffs with independent heater windings to eliminate interaction. Each 6.3 volts 1 amp, 350 volts dc 10 ma. Dynakit preamplifiers plug in directly without modification.
*Tube Complement: EL-34 (4), 7199 (2), GZ-34.
*Size: 13″ by 9-1/2″ by 6-1/2″ high.
*Weight: 32 pounds.
*Finish: Chassis and bottom plate bright nickel plated. Cover finished in charcoal brown vinyl paint.
*Designed by: Ed Laurent, Bob Tucker
*Year Introduced: 1959

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